They're the largest and most demanding wildernesses of all. 是最大、最荒凉的无人区
the steady roar of a billion beating locust wings will once again be replaced by nothing more than the sound of the desert wind. 无数蝗虫拍打翅膀时的喧哗将不复存在 再次取代它的只是沙漠中呼啸的风声
This is one of planet Earth's greatest spectacles. 这是地球上最壮观的景象之一
it's the most energy-saving way of flying. 这是最省力的飞行方式
Following the flow of wind means that they're always heading toward areas of low pressure, 随着风向迁徙意味着 它们总是飞向低压地区
and a whole swarm can consume literally hundreds of tonnes of vegetation. 而整团蝗虫云能消耗掉数百吨植物
They find new feeding grounds by following the smell of sprouting grass. 它们循着萌发的草香寻找新的用餐场所
The periods of boom in Death Valley are short. 死亡谷中的花期很短
A sudden flush of vegetation is what every desert dweller waits for, 植物的突然兴盛是 所有沙漠动物都盼望的事
and when it happens they must make the most of it. 一旦发生 它们必须尽可能地利用它